Audi A8 D4 Intercooler Pipe Hose Air Charge Line Right O/S 3.0 TDI 4H0145738P

Audi A8 D4 Intercooler Pipe Hose Air Charge Line Right O/S is an original boost system component from the Pipes, hoses and tubes category, designed for installation on the right side of the engine bay. As a part specifically engineered for the A8 D4 generation, it ensures proper routing of compressed air between the turbocharger and the intercooler, which translates into stable engine performance. This is the ideal solution for users looking for a proven, original component rather than random aftermarket replacements.

Specifications and technical data

• SKU: 4H0145738P
• Mark: Audi
• Condition: Used
• OEM Part Number: 4H0145738P
• Substitutable numbers: 4H0145738P, 4H0 145 738 P
• Location on the vehicle: Right
• Category: Hoses, Lines & Pipes

Function and role of the intercooler pipe in the Audi A8 D4

The right-side intercooler charge air pipe is responsible for the airtight and efficient routing of compressed air within the boost system. In practice, this means:

• maintaining the correct boost pressure without losses due to leaks,
• stable supply of cooled air to the engine,
• reducing power drops resulting from leaks or deformation of the pipe,
• proper fitment to the factory mounting points and engine bay geometry.

As a result, the boost system operates in a predictable manner, and the engine control unit does not need to compensate for errors caused by incorrect airflow.

Construction and fitment to the boost system

The pipe in question has been designed specifically for the A8 D4 platform, taking into account the limited space in the engine bay as well as temperature and pressure requirements. Key design features include:

• a profile matched to the factory routing of the intake system on the right side of the vehicle,
• the use of materials resistant to elevated charge air temperatures,
• suitability for operation at pressure values typical for turbocharged units.

Such construction reduces the risk of rubbing against adjacent components, minimizes stress, and facilitates installation without the need for modifications.

Benefits of using an original Audi pipe

Choosing an original intercooler pipe for the Audi A8 D4 offers a number of practical operational benefits:

• Factory fitment – the pipe is consistent with the factory geometry of the system, which facilitates installation and eliminates problems with mismatched ends or excessive tension.
• Stable engine performance – proper charge air flow helps maintain power and torque at the levels intended by the manufacturer.
• Reduced risk of secondary failures – an airtight intake system reduces the risk of the engine entering limp mode and the occurrence of errors related to boost pressure.
• Consistency with other boost system components – the pipe works with the factory intercooler, turbocharger, and mounts without the need for adaptation.

Characteristics of the used component

The offered intercooler pipe is a used component, which in practice means it has been removed from a vehicle and verified for further use. For many users, this is a reasonable compromise between purchase cost and maintaining the original specifications of the boost system. For this type of component, maintaining airtightness and proper pipe rigidity is key – these are the most important aspects when selecting parts.

If you are considering whether it is better to refurbish or install a used component, our guide may be helpful: refurbished or used original – which part to choose for repairs?

Expanding the Audi intake system – related components

If you are planning a comprehensive repair or upgrade of the engine area in your Audi and need other elements from the same group, such as additional intake pipes, vacuum hoses, or air cooling tubes, check out the available parts in the Audi pipes, hoses and tubes category.